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Ina ake rarraba graphite flake na halitta?
Dangane da rahoton binciken binciken yanayin kasa na Amurka (2014), adadin da aka tabbatar a duniya ya kai tan miliyan 130, daga cikinsu, ajiyar Brazil tan miliyan 58, kuma na kasar Sin ya kai ton miliyan 55, wanda ya ke matsayi na daya a duniya. A yau za mu gaya y...Kara karantawa